Calcite Crystals with Platonic Shapes and Minimal Surfaces


  • We acknowledge the Max Planck Society for funding and thank Rona Pitschke for TEM characterization, Anne Heilig for AFM characterization, Denis Gebauer and Andreas Verch for titration measurement. This work was partially supported by the National Natural Science Foundation of China (20671096).


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A Platonic relationship: Calcite single and mesocrystals with two platonic shapes and minimal surfaces are formed by a unified polymer-controlled nanoparticle aggregation. The shapes of the crystals (see picture for example) are tuned by the reactant concentration. The morphogenesis follows a nonclassical mechanism. A rhombohedral primitive minimal surface was observed for the first time in a synthetic crystallization of micrometer-sized particles.